Pyrromethene metal complex and light emitting device composition and light emitting devices using the same

摘要

A pyrromethene metal complex is used as a fluorescent dye to form a light emitting device. The light emitting device has a substance which brings about light emission between an anode and a cathode. By applying electrical energy, the device generates emission having an emission peak wavelength of 580 to 720 nm. The device contains at least one of: a diketopyrrolo[3,4-c]pyrrole derivative and an organic fluorescent material having a fluorescent peak wavelength of 580 to 720 nm; and a light emitting device composition containing a pyrromethene metal complex.